/**
 * 背景线条
 */
$(function () {
    !function(){

        function n(n,e,t){

            return n.getAttribute(e)||t

        }

        function e(n){

            return document.getElementsByTagName(n)

        }

        function t(){

            var t=e("script"),o=t.length,i=t[o-1];

            return{
                l:o,z:n(i,"zIndex",-1),o:n(i,"opacity",.5),c:n(i,"color","0,0,0"),n:n(i,"count",99)
            }

        }

        function o(){

            a=m.width=window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth,

                c=m.height=window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight

        }

        function i(){

            r.clearRect(0,0,a,c);

            var n,e,t,o,m,l;

            s.forEach(function(i,x){

                for(i.x+=i.xa,i.y+=i.ya,i.xa*=i.x>a||i.x<0?-1:1,i.ya*=i.y>c||i.y<0?-1:1,r.fillRect(i.x-.5,i.y-.5,1,1),e=x+1;e<u.length;e++)n=u[e],

                null!==n.x&&null!==n.y&&(o=i.x-n.x,m=i.y-n.y,

                    l=o*o+m*m,l<n.max&&(n===y&&l>=n.max/2&&(i.x-=.03*o,i.y-=.03*m),

                    t=(n.max-l)/n.max,r.beginPath(),r.lineWidth=t/2,r.strokeStyle="rgba("+d.c+","+(t+.2)+")",r.moveTo(i.x,i.y),r.lineTo(n.x,n.y),r.stroke()))

            }),

                x(i)

        }

        var a,c,u,m=document.createElement("canvas"),

            d=t(),l="c_n"+d.l,r=m.getContext("2d"),

            x=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||

                function(n){

                    window.setTimeout(n,1e3/45)

                },

            w=Math.random,y={x:null,y:null,max:2e4};m.id=l,m.style.cssText="position:fixed;top:0;left:0;z-index:"+d.z+";opacity:"+d.o,e("body")[0].appendChild(m),o(),window.onresize=o,

            window.onmousemove=function(n){

                n=n||window.event,y.x=n.clientX,y.y=n.clientY

            },

            window.onmouseout=function(){

                y.x=null,y.y=null

            };

        for(var s=[],f=0;d.n>f;f++){

            var h=w()*a,g=w()*c,v=2*w()-1,p=2*w()-1;s.push({x:h,y:g,xa:v,ya:p,max:6e3})

        }

        u=s.concat([y]),

            setTimeout(function(){i()},100)

    }();

});

/**
 *  鼠标特效
 */
// var a_idx = 0;
// $("html").click(function (e) {
//     var a = new Array("❤");
//     var $i = $("<span></span>").text(a[a_idx]);
//     a_idx = (a_idx + 1) % a.length;
//     var x = e.pageX,
//         y = e.pageY;
//     $i.css({
//         "z-index": 999999999999999999999999999999999999999999999999999999999999999999999,
//         "top": y - 20,
//         "left": x,
//         "position": "absolute",
//         "font-weight": "500",
//         "color": "rgb(" + ~~(255 * Math.random()) + "," + ~~(255 * Math.random()) + "," + ~~(255 * Math.random()) + ")"
//     });
//     $("body").append($i);
//     $i.animate({
//             "top": y - 180,
//             "opacity": 0
//         },
//         1500,
//         function () {
//             $i.remove();
//         });
// });

